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Unformatted text preview: This means that for large trees there must be some other mechanism(s) to transport water. 2. Use Reynolds number to describe (qualitatively) how momentum is transferred when a person swims in syrup (speed ~1 m/s, syrup density ~ 2000 kg/m 3 , viscosity ~10 Pa.sec, and a person is ~ 0.25 m thick) and when a bacterium swims in water (speed ~10-6 m/s, water density ~ 1000 kg/m 3 , viscosity ~0.001 Pa.sec, and a bacterium is ~ 10-6 m). Can the flow be turbulent in either case? Re (person) = vL/ = (2000) (1) (0.25) / (10) = 100 Momentum transfer dominated by inertial effect. Still laminar flow. Re (bacterium) = vL/ = (1000) (10-6 ) (10-6 ) / (0.001) = 10-6 Momentum transfer dominated by viscous effect. Definitely laminar flow....
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This note was uploaded on 10/18/2009 for the course CHBE 3200 taught by Professor Meredith during the Spring '08 term at Georgia Institute of Technology.
- Spring '08